Datos genéticos e isotópicos de individuos vinculados a la Reducción Franciscana de Baradero (siglo XVII)

In this research we provide bio anthropological information about the situation of natives reduced during seventeenth century in a mission located at La Plata River. We used human bone and dental samples of the Cementerio Indigena site linked to the Franciscan reduction of Santiago del Baradero established in 1615 (Baradero, Buenos Aires province). With this study we open up two lines of investigation: 1- determination of the genetic composition obtained from the Amerindian mitochondrial DNA; and 2- the isotopic (δ13C y δ15N) analysis to identify the type of diet.  Given that the relocation of the different native groups would have produced a marked genetic variation, its magnitude was evaluated through the identifcation of the mitochondrial haplogroup of ten individuals. Between them the four south Amerindian haplogroups are represented, especially B; this results are the frst known for the lower Parana region. Regarding the δ13C isotopic values, they are higher than those registered in pre Hispanic sites, which would indicate the existence of a mixed diet with greater consumption of C4 plants. Also, the lower δ15N values on bones compared with those on tooth infers a lower consumption of animal proteins in the last years of life.